Hello,
I have one virtual host server with KVM and Cloudmin (ubuntu server 11.04) with many guests system (also ubuntu server). On host I installed OpenVPN server (with working routing local network to vpn client).
From vpn client I can make any connection to virtual guests without problems, but only to one guest (first one, tap0...) I can ping (icmp) it but can't make any other network (tcp or udp) connection.
So I try to debug it and check network transfer in virtual host and get this:
TEST SSH from VPN client to working virtual guests
Jan 28 19:51:36 virthost kernel: [7680080.105160] IN=tun0 OUT=br1 SRC=10.8.3.6 DST=192.168.3.8 LEN=56 TOS=0x00 PREC=0x00 TTL=63 ID=16872 DF PROTO=TCP SPT=55065 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Jan 28 19:51:36 virthost kernel: [7680080.105303] IN=br1 OUT=tun0 PHYSIN=tap5 SRC=192.168.3.8 DST=10.8.3.6 LEN=40 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=TCP SPT=22 DPT=55065 WINDOW=0 RES=0x00 ACK RST URGP=0
TEST SSH from VPN client to problem virtual guests
Jan 28 19:51:54 virthost kernel: [7680097.630987] IN=tun0 OUT=br1 SRC=10.8.3.6 DST=192.168.3.251 LEN=56 TOS=0x00 PREC=0x00 TTL=63 ID=32723 DF PROTO=TCP SPT=56350 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0 Jan 28 19:51:54 virthost kernel: [7680097.631224] IN=br1 OUT=br1 PHYSIN=tap0 PHYSOUT=eth1 SRC=192.168.3.251 DST=10.8.3.6 LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=TCP SPT=22 DPT=56350 WINDOW=0 RES=0x00 ACK RST URGP=0
TEST PING from VPN client to working virtual guest
Jan 28 21:29:31 virthost kernel: [7685954.655049] IN=tun0 OUT=br1 SRC=10.8.3.6 DST=192.168.3.8 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=2025 SEQ=3 Jan 28 21:29:31 virthost kernel: [7685954.655218] IN=br1 OUT=tun0 PHYSIN=tap5 SRC=192.168.3.8 DST=10.8.3.6 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=39056 PROTO=ICMP TYPE=0 CODE=0 ID=2025 SEQ=3
TEST PING from VPN client to problem virtual guest
Jan 28 21:26:24 virthost kernel: [7685767.387514] IN=tun0 OUT=br1 SRC=10.8.3.6 DST=192.168.3.251 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=2017 SEQ=3 Jan 28 21:26:24 virthost kernel: [7685767.387700] IN=br1 OUT=br1 PHYSIN=tap0 PHYSOUT=eth1 SRC=192.168.3.251 DST=10.8.3.6 LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=39097 PROTO=ICMP TYPE=0 CODE=0 ID=2017 SEQ=3 Jan 28 21:26:24 virthost kernel: [7685767.387861] IN=br1 OUT=tun0 PHYSIN=eth1 SRC=192.168.3.251 DST=10.8.3.6 LEN=84 TOS=0x00 PREC=0x00 TTL=62 ID=39097 PROTO=ICMP TYPE=0 CODE=0 ID=2017 SEQ=3
Please help. Thank You.